getMapRating problem

[koragg]

Hello, I'm trying to add average map rating into a dxdraw window but I have trouble doing so. If anybody can help, would be great. Here's the code:

Client

drawNextText = ''
_nextWidth = 0
_nextHeight = 0
local g__sW, g__sH = guiGetScreenSize()
local sx, sy = g__sW/1440, g__sH/900
local visible = true

function getinfo(name, oldvalue)
	if source == getResourceRootElement() and name == 'gamemode.nextmap' then
		local what = getElementData(getResourceRootElement(), 'gamemode.nextmap')
		drawNextText = what
		_nextWidth = dxGetTextWidth(what, 0.45, 'bankgothic')
		_nextHeight = dxGetFontHeight(0.45, 'bankgothic') * 3
	end
end
addEventHandler('onClientElementDataChange', root, getinfo)

function drawinfo()
	if _nextWidth == 0 then return end
	if visible then
    dxDrawRectangle((g__sW-95)-(_nextWidth+20), 12*sy, _nextWidth+20, _nextHeight+10, tocolor(0,0,0,100),false)
    dxDrawText(drawNextText, (g__sW-95)-(_nextWidth+20)+5, 12*sy, (g__sW-100)-(_nextWidth+20)+_nextWidth+15, 5+_nextHeight+17, tocolor(254, 254, 34, 255), 0.45, 'bankgothic', 'center', 'center', true)
	end
end
addEventHandler("onClientRender",root, drawinfo)

function shownextmap()
		visible = true
end

function hidenextmap()
	if visible then
		visible = false
	end
end

Server

addEvent('onNextmapSettingChange', true)
function nmap(nmap)
	local mapName = getResourceInfo(nmap, "name") or getResourceName(nmap)
	local rating = exports.mapratings:getMapRating(mapName)
	if rating then
    local average = tonumber(rating.average) or "0"
	end
	local stringSet = "Next map: "..mapName.." ("..tostring(average).."/10)"
	nextmap = stringSet
	map = exports.mapmanager:getRunningGamemodeMap()
	if map then
		local mapName = getResourceInfo(map, "name") or getResourceName(map)
		local rating = exports.mapratings:getMapRating(mapName)   
		if rating then
        local average = tonumber(rating.average) or "0"
		end
		stringSet = "Current map: ".. mapName.." ("..tostring(average).."/10)\n"..stringSet
	end
	setElementData(resourceRoot, 'gamemode.nextmap', stringSet)	
end
addEventHandler('onNextmapSettingChange', root, nmap)

And here's a screenshot showing what I want to achieve

As you see, the "Next Map" window at top right shows "(nil/10) as map rating. I can't get it to show the actual average rating of the maps there (or if map has no rating yet, to show 0/10).

[koragg]

I put outputChatBoxes after each line and problem appears to be in lines: 5,6,14,15.

[koragg]

FIXED

Thanks to @dugasz1 @xiti and @lukum! Working code below if anyone's interested.

Client

drawNextText = ''
_nextWidth = 0
_nextHeight = 0
local g__sW, g__sH = guiGetScreenSize()
local sx, sy = g__sW/1440, g__sH/900
local visible = true

function getinfo(name, oldvalue)
	if source == getResourceRootElement() and name == 'gamemode.nextmap' then
		local what = getElementData(getResourceRootElement(), 'gamemode.nextmap')
		drawNextText = what
		_nextWidth = dxGetTextWidth(what, 0.45, 'bankgothic')
		_nextHeight = dxGetFontHeight(0.45, 'bankgothic') * 3
	end
end
addEventHandler('onClientElementDataChange', root, getinfo)

function drawinfo()
	if _nextWidth == 0 then return end
	if visible then
    dxDrawRectangle((g__sW-95)-(_nextWidth+20), 12*sy, _nextWidth+20, _nextHeight+10, tocolor(0,0,0,100),false)
    dxDrawText(drawNextText, (g__sW-95)-(_nextWidth+20)+5, 12*sy, (g__sW-100)-(_nextWidth+20)+_nextWidth+15, 5+_nextHeight+17, tocolor(254, 254, 34, 255), 0.45, 'bankgothic', 'center', 'center', true)
	end
end
addEventHandler("onClientRender",root, drawinfo)

function shownextmap()
		visible = true
end

function hidenextmap()
	if visible then
		visible = false
	end
end

Server

addEvent('onNextmapSettingChange', true)
function nmap(nmap)
	local mapName = getResourceInfo(nmap, "name") or getResourceName(nmap)
	local rating = exports.mapratings:getMapRating(getResourceName(nmap))
	local average = 0
    if rating then
    average = tonumber(rating.average) or "0"
    end
	local stringSet = "Next map: "..mapName.." ("..tostring(average).."/10)"
	nextmap = stringSet
	map = exports.mapmanager:getRunningGamemodeMap()
	if map then
		local mapName = getResourceInfo(map, "name") or getResourceName(map)
        local rating = exports.mapratings:getMapRating(getResourceName(map))		
		local average = 0
        if rating then
        average = tonumber(rating.average) or "0"
        end
		stringSet = "Current map: ".. mapName.." ("..tostring(average).."/10)\n"..stringSet
	end
	setElementData(resourceRoot, 'gamemode.nextmap', stringSet)	
end
addEventHandler('onNextmapSettingChange', root, nmap)

function safeString(s)
    s = string.gsub(s, '&', '&')
    s = string.gsub(s, '"', '"')
    s = string.gsub(s, '<', '&lt;')
    s = string.gsub(s, '>', '&gt;')
    return s:gsub( "(['])", "''" )
end

meta.xml

<meta>
	<info name="Current/Next Map Info" description="Map Names Info" author="SDK/BinSlayer" type="script" version="1.0"/>
	<script src="server.lua" type="server"/>
	<script src="client.lua" type="client"/>
	
	<export function="shownextmap" type="client"/>
	<export function="hidenextmap" type="client"/>
	
</meta>

PS Not sure if it can work on default race.zip but won't hurt to try. Lock the topic, problem fixed.

Edited September 28, 2016 by koragg